US20140344590A1 - Electronic device and power management method - Google Patents
Electronic device and power management method Download PDFInfo
- Publication number
- US20140344590A1 US20140344590A1 US14/217,490 US201414217490A US2014344590A1 US 20140344590 A1 US20140344590 A1 US 20140344590A1 US 201414217490 A US201414217490 A US 201414217490A US 2014344590 A1 US2014344590 A1 US 2014344590A1
- Authority
- US
- United States
- Prior art keywords
- microcontroller
- cpu
- electronic device
- driving circuits
- control programs
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3234—Power saving characterised by the action undertaken
- G06F1/3287—Power saving characterised by the action undertaken by switching off individual functional units in the computer system
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
Definitions
- the disclosure generally relates to electronic devices, and particularly to an electronic device having a power management function and a power management method of the electronic device.
- PMU power management unit
- circuit modules e.g., WIFI module
- CPU central processing unit
- FIG. 1 is a block diagram of one embodiment of an electronic device.
- FIG. 2 is a flowchart of one embodiment of a power management method of the electronic device of FIG. 1 .
- FIG. 1 shows an electronic device 100 according to an exemplary embodiment.
- the electronic device 100 may be a mobile phone or a personal digital assistant, for example.
- the electronic device 100 includes a central processing unit (CPU) 10 , a plurality of power driving circuits 20 , and a control unit 30 .
- the CPU 10 and the control unit 30 are configured to manage the power driving circuits 20 .
- the power driving circuits 20 may include a light emitting diode (LED) circuit, a WIFI circuit, and a radio frequency (RF) circuit.
- LED light emitting diode
- WIFI wireless fidelity
- RF radio frequency
- the CPU 10 is electronically connected to the control unit 30 via an I2C bus, and executes control programs in the control unit 30 .
- the control programs are used to control the power driving circuits 20 .
- a first control program is used to activate the LED circuit
- a second control program is used to activate the WIFI circuit.
- the CPU 10 updates the control programs to control other power driving circuits 20 , such as a microphone circuit, for example.
- the control unit 30 includes a microcontroller 32 and a storage 34 .
- the microcontroller 32 is a power management unit (PMU) electronically connected to the CPU 10 via the I2C bus, to receive the control programs from the CPU 10 .
- the microcontroller 32 is electronically connected to the storage 34 , to write/read the control programs in/from the storage 34 .
- the microcontroller 32 is powered by a battery of the electronic device 100 .
- the microcontroller 32 processes the control programs to control the power driving circuits 20 . For example, when a control program that is used to control the LED circuit is processed by the microcontroller 32 , the LED circuit is activated.
- FIG. 2 is a flowchart of one embodiment of a power management method of the electronic device 100 .
- additional blocks may be added to the flowchart, others removed, and the ordering of the blocks may be changed.
- the CPU 10 stores the control programs in the storage 34 via the I2C bus and the microcontroller 32 .
- the microcontroller 32 processes the control programs, and controls the power driving circuits 20 accordingly. For example, the microcontroller 32 activates the RF circuit according to a first control program, to receive short message, and then the microcontroller 32 activates the LED circuit according to a second control program, to light one or more LEDs, thereby notifying a user.
- the CPU 10 stores the control programs in the storage 34 , when the electronic device 100 is turned off, the microcontroller 32 reads the control programs from the storage 34 , and controls the power driving circuits 20 accordingly. Therefore, some base function, such as short message notification, cannot be influenced even through the electronic device 100 is turned off. Thus, the electronic device 100 is both convenient and efficient.
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Computing Systems (AREA)
- Power Sources (AREA)
Abstract
An electronic device includes a central processing unit (CPU), a plurality of power driving circuits, and a control unit. The control unit includes a microcontroller and a storage electronically connected to the microcontroller, the microcontroller is electronically connected to the CPU and the power driving circuits. The CPU stores control programs in the storage via the microcontroller, the microcontroller reads the control programs from the storage, and controls the power driving circuits according to the control programs.
Description
- 1. Technical Field
- The disclosure generally relates to electronic devices, and particularly to an electronic device having a power management function and a power management method of the electronic device.
- 2. Description of the Related Art
- Electronic devices (e.g., mobile phone) often employ a power management unit (PMU) to manage power to power a plurality of circuit modules (e.g., WIFI module). However, the PMU is directed by a central processing unit (CPU), when the CPU is not startup, the PWU may not control the circuit modules.
- Therefore, there is room for improvement within the art.
- Many aspects of the present disclosure can be better understood with reference to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present embodiments.
-
FIG. 1 is a block diagram of one embodiment of an electronic device. -
FIG. 2 is a flowchart of one embodiment of a power management method of the electronic device ofFIG. 1 . - The disclosure is illustrated by way of example and not by way of limitation in the figures of the accompanying drawings in which like references indicate similar elements. It should be noted that references to “an” or “one” embodiment in this disclosure are not necessarily to the same embodiment, and such references mean “at least one.”
-
FIG. 1 shows anelectronic device 100 according to an exemplary embodiment. Theelectronic device 100 may be a mobile phone or a personal digital assistant, for example. - The
electronic device 100 includes a central processing unit (CPU) 10, a plurality ofpower driving circuits 20, and acontrol unit 30. TheCPU 10 and thecontrol unit 30 are configured to manage thepower driving circuits 20. Thepower driving circuits 20 may include a light emitting diode (LED) circuit, a WIFI circuit, and a radio frequency (RF) circuit. - The
CPU 10 is electronically connected to thecontrol unit 30 via an I2C bus, and executes control programs in thecontrol unit 30. The control programs are used to control thepower driving circuits 20. For example, a first control program is used to activate the LED circuit, and a second control program is used to activate the WIFI circuit. - In addition, the
CPU 10 updates the control programs to control otherpower driving circuits 20, such as a microphone circuit, for example. - The
control unit 30 includes amicrocontroller 32 and astorage 34. In one exemplary embodiment, themicrocontroller 32 is a power management unit (PMU) electronically connected to theCPU 10 via the I2C bus, to receive the control programs from theCPU 10. Themicrocontroller 32 is electronically connected to thestorage 34, to write/read the control programs in/from thestorage 34. In one exemplary embodiment, themicrocontroller 32 is powered by a battery of theelectronic device 100. Additionally, themicrocontroller 32 processes the control programs to control thepower driving circuits 20. For example, when a control program that is used to control the LED circuit is processed by themicrocontroller 32, the LED circuit is activated. -
FIG. 2 is a flowchart of one embodiment of a power management method of theelectronic device 100. Depending on the embodiment, additional blocks may be added to the flowchart, others removed, and the ordering of the blocks may be changed. - In block S1, the
CPU 10 stores the control programs in thestorage 34 via the I2C bus and themicrocontroller 32. - In block S2, when the
electronic device 100 is turned off, theCPU 10 is not powered accordingly, then themicrocontroller 32 reads the control programs from thestorage 34. - In block S3, the
microcontroller 32 processes the control programs, and controls thepower driving circuits 20 accordingly. For example, themicrocontroller 32 activates the RF circuit according to a first control program, to receive short message, and then themicrocontroller 32 activates the LED circuit according to a second control program, to light one or more LEDs, thereby notifying a user. - In block S4, when the
electronic device 100 is turned on, theCPU 10 is powered accordingly, whether the control programs need to be updated by theCPU 10 is manually determined. - In block S5, if the control programs need to be updated, the
CPU 10 updates the control programs, and then theCPU 10 and themicrocontroller 32 jointly activate thepower driving circuits 20. If the control programs do not need to be updated, themicrocontroller 32 continues to control thepower driving circuits 20 alone. - In summary, the
CPU 10 stores the control programs in thestorage 34, when theelectronic device 100 is turned off, themicrocontroller 32 reads the control programs from thestorage 34, and controls thepower driving circuits 20 accordingly. Therefore, some base function, such as short message notification, cannot be influenced even through theelectronic device 100 is turned off. Thus, theelectronic device 100 is both convenient and efficient. - Although numerous characteristics and advantages of the exemplary embodiments have been set forth in the foregoing description, together with details of the structures and functions of the exemplary embodiments, the disclosure is illustrative only, and changes may be made in detail, especially in the matters of arrangement of parts within the principles of disclosure to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
Claims (10)
1. An electronic device, comprising:
a central processing unit (CPU),
a plurality of power driving circuits; and
a control unit comprising a microcontroller and a storage electronically connected to the microcontroller, the microcontroller electronically connected to the CPU and the power driving circuits;
wherein the CPU stores control programs in the storage via the microcontroller, the microcontroller reads the control programs from the storage, and controls the power driving circuits according to the control programs.
2. The electronic device as claimed in claim 1 , wherein the CPU updates the control programs.
3. The electronic device as claimed in claim 1 , wherein the microcontroller is electronically connected to the CPU via an I2C bus.
4. The electronic device as claimed in claim 1 , wherein if the electronic device is turned on, the CPU and the microcontroller jointly activate the power driving circuits; if the electronic device is turned off, the microcontroller activates the power driving circuits alone.
5. The electronic device as claimed in claim 1 , wherein the microcontroller is a power management unit (PMU).
6. An electronic device, comprising:
a central processing unit (CPU),
a plurality of power driving circuits; and
a control unit comprising a microcontroller and a storage electronically connected to the microcontroller, the microcontroller electronically connected to the CPU and the power driving circuits;
wherein the CPU stores control programs in the storage via the microcontroller, if the electronic device is turned off, the microcontroller activates the power driving circuits alone according to the control programs; if the electronic device is turned on, the CPU and the microcontroller jointly activate the power driving circuits according to the control programs.
7. The electronic device as claimed in claim 6 , wherein the CPU updates the control programs.
8. The electronic device as claimed in claim 6 , wherein the microcontroller is electronically connected to the CPU via an I2C bus.
9. A power management method of an electronic device, the electronic device comprising a central processing unit (CPU), a plurality of power driving circuits; a microcontroller, and a storage, the power management method comprising:
storing control programs in the storage via the CPU;
reading the control programs from the storage via the microcontroller; and
activating the power driving circuits via the microcontroller.
10. The power management method of claim 9 , further comprising updating the control programs via the CPU.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW102117179 | 2013-05-15 | ||
TW102117179A TW201443630A (en) | 2013-05-15 | 2013-05-15 | Electronic device and using method |
Publications (1)
Publication Number | Publication Date |
---|---|
US20140344590A1 true US20140344590A1 (en) | 2014-11-20 |
Family
ID=51896787
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/217,490 Abandoned US20140344590A1 (en) | 2013-05-15 | 2014-03-18 | Electronic device and power management method |
Country Status (2)
Country | Link |
---|---|
US (1) | US20140344590A1 (en) |
TW (1) | TW201443630A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20160246363A1 (en) * | 2015-05-04 | 2016-08-25 | Mediatek Inc. | Early Power Compensation Method And Apparatus Thereof |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050246563A1 (en) * | 2004-04-28 | 2005-11-03 | Microsoft Corporation | Task-oriented processing as an auxiliary to primary computing environments |
US20090260081A1 (en) * | 2008-04-14 | 2009-10-15 | Tecsys Development, Inc. | System and Method for Monitoring and Securing a Baseboard Management Controller |
US20110055434A1 (en) * | 2009-08-31 | 2011-03-03 | Pyers James | Methods and systems for operating a computer via a low power adjunct processor |
-
2013
- 2013-05-15 TW TW102117179A patent/TW201443630A/en unknown
-
2014
- 2014-03-18 US US14/217,490 patent/US20140344590A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050246563A1 (en) * | 2004-04-28 | 2005-11-03 | Microsoft Corporation | Task-oriented processing as an auxiliary to primary computing environments |
US20090260081A1 (en) * | 2008-04-14 | 2009-10-15 | Tecsys Development, Inc. | System and Method for Monitoring and Securing a Baseboard Management Controller |
US20110055434A1 (en) * | 2009-08-31 | 2011-03-03 | Pyers James | Methods and systems for operating a computer via a low power adjunct processor |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20160246363A1 (en) * | 2015-05-04 | 2016-08-25 | Mediatek Inc. | Early Power Compensation Method And Apparatus Thereof |
US10019048B2 (en) * | 2015-05-04 | 2018-07-10 | Mediatek Inc. | Early power compensation method and apparatus thereof |
Also Published As
Publication number | Publication date |
---|---|
TW201443630A (en) | 2014-11-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR102148948B1 (en) | Multi tasking method of electronic apparatus and electronic apparatus thereof | |
US8824346B2 (en) | Remote wakeup of application processor of mobile device | |
CN105555013B (en) | Method of manufacturing printed circuit board assembly | |
KR102151135B1 (en) | Method for managing power and electronic device thereof | |
US9059597B2 (en) | Reduction of leakage current in mobile device with embedded battery | |
KR102367055B1 (en) | Electronic device and method for providing battery information in the electronic device | |
US10198057B2 (en) | Electronic device and method for measuring position change | |
CN105493006A (en) | Electronic device having curved bottom and operation method therefor | |
US20120290853A1 (en) | Indicator light control circuuit | |
US20150288215A1 (en) | Charger device with network connectivity | |
CN106020962B (en) | A kind of course control method and terminal device | |
WO2015078342A1 (en) | Method for acquiring memory information, and terminal | |
EP3026782A1 (en) | Method for charging control and an electronic device thereof | |
US20150312884A1 (en) | Notification system for electronic devices | |
US9646598B2 (en) | Audio device | |
US10446912B2 (en) | Electronic device and method of improving antenna performance thereof | |
KR20150107448A (en) | Task Migration Method and Apparatus | |
CN103606718A (en) | Battery, battery protection method, apparatus and system | |
US9729815B2 (en) | Method and electronic device for controlling content integrity using numerical data | |
US8806236B2 (en) | Power matching system | |
US20140344590A1 (en) | Electronic device and power management method | |
US20130318368A1 (en) | Power management system and method for server | |
US8520350B2 (en) | Protection circuit for digital integrated chip | |
CN204156936U (en) | A kind of acoustic control speech-sound intelligent mobile phone | |
US20120267958A1 (en) | Current suppression circuit and electronic device employing the same |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: FIH (HONG KONG) LIMITED, HONG KONG Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CHANG, JO-CHIEN;REEL/FRAME:032458/0331 Effective date: 20140312 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |